Vehicle Control Transfer Region Adjustment for Automatic Lane Changes
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Solution Overview
Problem
When a vehicle is transitioning between lanes at a branching location, the automatic control system must transfer control to manual mode due to overlapping control transfer regions and vehicle passage regions, causing unnecessary driver intervention and potential safety issues.
Innovation Solution
A vehicle control device that determines the presence of automatic control prohibited regions and adjusts the control transfer region length to avoid inclusion within the vehicle passage region, allowing for seamless automatic lane changes by shortening the control transfer region when it overlaps with the vehicle passage region, thus preventing manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control transfer region is set before the automatic control prohibited region to ensure safe transfer from automatic to manual control, then the reliability of control transfer is improved, but the vehicle passage region may include part of the control transfer region, causing unnecessary manual intervention and reducing ease of operation
Solution Approach 1:
The patent applies dynamics by making the control transfer region length adjustable rather than fixed. The processor dynamically shortens the control transfer region length when detecting that the vehicle passage region includes part of the control transfer region, allowing the system to adapt to different driving scenarios and eliminate unnecessary manual intervention while maintaining safety where needed
Solution Approach 2:
The patent changes the parameter of control transfer region length based on vehicle context. When the vehicle is scheduled to pass through a vehicle passage region, the system changes the control transfer region length to prevent overlap, thereby preventing unnecessary transfer to manual control and reducing driver burden while maintaining reliability when overlap would be unsafe
2Reliability
If the automatic control prohibited region is set in the branching road to prohibit automatic control where safety concerns exist, then the safety of manual control transfer is improved, but a new control transfer region must be set before the prohibited region, causing the vehicle passage region to include the control transfer region and requiring unnecessary manual intervention
Solution Approach 1:
The system dynamically adjusts the control transfer region length based on whether the vehicle is scheduled to pass through a vehicle passage region. When passing is scheduled, the control transfer region length is shortened to prevent unnecessary manual intervention, thereby maintaining automatic control capability during lane changes while still ensuring safety by keeping control transfer regions where actually needed
Solution Approach 2:
The patent changes the control transfer region length parameter dynamically. When the vehicle passage region includes part of the control transfer region, the system changes the length to prevent overlap, allowing automatic control to continue during the lane change maneuver while maintaining safety through selective control transfer region placement
Data Source
AI summary
A vehicle control device has a processor configured to determine whether an automatic control prohibited region is included on a traveling lane, set a control transfer region on the traveling lane before the automatic control prohibited region, determine whether a vehicle passage region on a traveling lane through which the vehicle is scheduled to pass when the vehicle moves between lanes includes at least part of the control transfer region, and newly set the automatic control prohibited region to include the vehicle passage region, wherein the control transfer region is newly set by shortening a length of the control transfer region so that the control transfer region is not included in the vehicle passage region, when the vehicle passage region includes at least part of the control transfer region and the control transfer region satisfies a predetermined condition.